321021332021401 has 6 divisors (see below), whose sum is σ = 352858158337706. Its totient is φ = 291837574564800.

The previous prime is 321021332021393. The next prime is 321021332021417. The reversal of 321021332021401 is 104120233120123.

It can be written as a sum of positive squares in only one way, i.e., 305848156905225 + 15173175116176 = 17488515^2 + 3895276^2 .

It is not a de Polignac number, because 321021332021401 - 2³ = 321021332021393 is a prime.

It is a super-2 number, since 2×321021332021401² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321021332021461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1326534429720 + ... + 1326534429961.

Almost surely, 2^{321021332021401} is an apocalyptic number.

It is an amenable number.

321021332021401 is a deficient number, since it is larger than the sum of its proper divisors (31836826316305).

321021332021401 is a wasteful number, since it uses less digits than its factorization.

321021332021401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2653068859703 (or 2653068859692 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 321021332021401 its reverse (104120233120123), we get a palindrome (425141565141524).

The spelling of 321021332021401 in words is "three hundred twenty-one trillion, twenty-one billion, three hundred thirty-two million, twenty-one thousand, four hundred one".